What is CVE-2026-64600?

CVE-2026-64600 is a vulnerability in Linux. Published 2026-07-23.

Is CVE-2026-64600 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Linux

CVE-2026-64600

In the Linux kernel, the following vulnerability has been resolved: xfs: resample the data fork mapping after cycling ILOCK xfs_reflink_fill_{cow_hole,delalloc} are both presented with an inode, a data fork mapping, and a cow fork mappin…

Affected products

Linux — versions 3c68d44a2b49a0ac9165faa9c191e1e618c8a8d5, 4.11, 0

Public proof-of-concept exploits

0xBlackash/CVE-2026-64600
HORKimhab/CVE-2026-64600

References

416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
416baaa9-dc9f-4396-8d5f-8c081fb06d67
af854a3a-2127-422b-91ae-364da2661108
af854a3a-2127-422b-91ae-364da2661108
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2026-64600?: CVE-2026-64600 is a vulnerability in Linux. Published 2026-07-23.
Is CVE-2026-64600 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.